WO2017121578A1 - Fuel injection system - Google Patents
Fuel injection system Download PDFInfo
- Publication number
- WO2017121578A1 WO2017121578A1 PCT/EP2016/081686 EP2016081686W WO2017121578A1 WO 2017121578 A1 WO2017121578 A1 WO 2017121578A1 EP 2016081686 W EP2016081686 W EP 2016081686W WO 2017121578 A1 WO2017121578 A1 WO 2017121578A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pressure
- fuel
- low
- region
- check valve
- Prior art date
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 167
- 238000002347 injection Methods 0.000 title claims abstract description 41
- 239000007924 injection Substances 0.000 title claims abstract description 41
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 8
- 230000010349 pulsation Effects 0.000 claims description 22
- 238000002485 combustion reaction Methods 0.000 claims description 14
- 230000003068 static effect Effects 0.000 claims description 8
- 238000013016 damping Methods 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 4
- 238000010992 reflux Methods 0.000 description 5
- 230000006378 damage Effects 0.000 description 4
- 239000002775 capsule Substances 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
- F02M37/0023—Valves in the fuel supply and return system
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
- F02M37/0041—Means for damping pressure pulsations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
- F02M55/025—Common rails
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/04—Means for damping vibrations or pressure fluctuations in injection pump inlets or outlets
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
- F02M59/46—Valves
- F02M59/466—Electrically operated valves, e.g. using electromagnetic or piezoelectric operating means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
- F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
- F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
- F02M63/0265—Pumps feeding common rails
Definitions
- Fuel injection system The invention relates to a fuel injection system for
- a fuel injection system comprises a high-pressure fuel pump.
- High-pressure fuel pumps in such Kraftlichinspritzsys- systems are used to pressurize a fuel at a high pressure, the pressure for example in gasoline internal combustion engines in the range of 150 bar to 400 bar and in diesel engines in a range of 1500 bar to 2500 bar can.
- the high-pressure fuel pump is typically designed as a piston pump, wherein a piston performs a translational movement in a pressure chamber of the high-pressure fuel pump, and thus the fuel periodically compressed and relaxed.
- Upstream of the pressure chamber of the high-pressure fuel pump is usually a low-pressure system, which provides the fuel for the high-pressure fuel pump.
- Vibrations which can cause unwanted noise or in the worst case, damage to different components of the fuel injection system. It is therefore known to provide a low-pressure damper in a low-pressure region of the high-pressure fuel pump, which compensates for such pressure pulsations. It is known in ⁇ example, the use of damper capsules made of metal, which consist of two metal membranes, which are filled with gas and welded at the edges. As required, the size, shape and number of damper capsules can be selected to meet the requirements for damping the pressure pulsations. Despite providing such a low-pressure damper in the Never ⁇ derdruck Scheme the high-pressure fuel pump, however, it may continue to come back pulsations in the low pressure system of the fuel injection system, which should be largely avoided for the reasons mentioned above.
- a fuel injection system for injecting a substance ⁇ force in at least one combustion chamber of an internal combustion engine has a low-pressure system for providing the fuel, a high-pressure fuel pump for applying the fuel ⁇ material with a high pressure and an inlet region for supplying the fuel from the low-pressure system to the high-pressure fuel pump.
- the high-pressure fuel pump comprises a pressure chamber in which the high pressure is applied to the fuel, a low-pressure region fluidically connected to the inlet region for supplying the pressure chamber with fuel, and a high-pressure region into which the fuel subjected to high pressure in the pressure chamber is delivered.
- the pressure chamber has an inlet valve for admitting
- a check valve is arranged, which blocks a backflow of a non-promoted in the high-pressure region fuel volume from the pressure chamber in the low-pressure system.
- a check valve is provided in the fuel injection system in addition to the usually existing inlet valve, which prevents pressure pulsations during the working cycle of the high-pressure fuel pump are passed into the low ⁇ pressure system, for example, if the inlet valve is kept open.
- check valve The particular technical benefit of the check valve is to dampen or even completely block the pressure pulsations which result from the expulsion of fuel from the pressure chamber of the high-pressure fuel pump and which could spread into the low-pressure system of the fuel injection system.
- Check valve is arranged in the supply line.
- High-pressure fuel pump to an inlet port wherein the check valve may also be arranged in the inlet connection ⁇ alternatively.
- the high-pressure fuel pump in the low-pressure region on a low-pressure damper for damping pressure pulsations wherein a damper ⁇ bore is provided in a housing of the high-pressure fuel pump, which connects a damper volume of the low-pressure damper with the inlet region, wherein the check valve in the damper bore is arranged.
- the housing of the high-pressure fuel pump also includes the low-pressure damper. That is, the supply line and / or the inlet connection can be arranged both on a housing portion of the high-pressure fuel pump, which receives the pump piston, as well as on a housing portion of the high-pressure fuel pump, which forms the Dämp ⁇ fervolumen.
- the check valve advantageously prevents the propagation of the pressure pulsations into the low-pressure system.
- components can be spared in the low pressure system and therefore designed less robust, which generally leads to a cost savings.
- the use of the check valve located upstream of the damper volume is taken into account.
- the damper volume which is determined by a piston cross-sectional area of a pump piston of the high-pressure fuel pump times a piston stroke, is thus compensated by the damper volume, so that advantageously an external leakage or other damage to the high-pressure ⁇ fuel pump can be prevented.
- This is particularly advantageous since a backflow of the fuel volume not delivered into the high-pressure region into the low-pressure system is prevented by the check valve.
- the non-return valve has a spring for pre ⁇ tension of a valve element in a closing direction of the check valve.
- a static opening pressure of the check valve - due to a spring force of the spring - in particular in a range of 0.03 bar to 0.15 bar. This corresponds advantageously to a low static opening pressure, which can be advantageously realized by an appropriate dimensioning of the spring.
- the check valve on a flow characteristic ⁇ flow in the flow area of the check valve which is in a range of 0.1 1 / min to 4.5 1 / min.
- a prefeed pump for conveying fuel is provided in the Zu ⁇ running range, wherein the prefeed pump is designed to generate a supply pressure of a fuel in the inlet ⁇ range , which is greater than the static ⁇ ff ⁇ tion pressure of the check valve is.
- the running pressure of the fuel to be raised to a value which is dependent on the opening pressure or the flow characteristic of the check valve, so that advantageously a Dampfblasen ⁇ education or cavitation can be avoided, and the desired flow rate of the fuel can be achieved.
- the check valve ⁇ has a defined minimum leakage for discharging
- a parallel to the check valve switched bore or notch for discharging fuel from the low pressure region of the high-pressure fuel pump may be provided in the low-pressure system.
- a pressure relief valve is provided, which is designed to divert a fuel excess pressure occurring in the high-pressure region into the low-pressure region downstream of the check valve.
- undesirably high pressures in the high-pressure region are returned to the low-pressure region by the pressure-limiting valve and can spread there as pressure pulsations. Again, it makes sense to dissipate these occurring only in special load points overpressures on a minimum leakage or a corresponding parallel bore or notch to the check valve in the low pressure system.
- the check valve pressure pulsations which at Open the pressure relief valve arise, and which are drained into the low pressure area, dampen.
- the inlet valve as a digital, controllable solenoid valve, in particular as a normally open solenoid valve is formed.
- a digital, controllable solenoid valve in particular as a normally open solenoid valve is formed.
- FIG. 1 shows a schematic representation of a Kraftstoffein- injection system with a high-pressure fuel pump and a check valve.
- Fig. 2 is a sectional view in an enlarged area of the fuel injection system near the high-pressure fuel ⁇ pump, the check valve may optionally be arranged at different positions;
- FIG. 3 is an enlarged fragmentary view of the check valve of FIG. 2 having a predefined minimum leakage
- FIG. and Fig. 4 is an enlarged partial view of the check valve of FIG. 2 with a parallel to the check valve ange ⁇ arranged bore or notch.
- Fig. 1 shows a schematic representation of a fuel injection system ⁇ 10, is performed with the combustion chambers in an internal combustion engine with high-pressure fuel 12 to ⁇ .
- the fuel injection system has a tank 14, a prefeed pump 16, a high-pressure fuel pump 18 and a pressure accumulator 20, the so-called rail, on which an injector 22 is arranged for each combustion chamber of the internal combustion engine to be supplied.
- the fuel 12 is conveyed by the prefeed pump 16 with a predetermined inlet pressure PZ from the tank 14 to the high-pressure fuel pump 18, where the fuel 12 is compressed by a translational movement of a pump piston 24 in a pressure chamber 26 to a predetermined high pressure and then conveyed to the pressure accumulator 20 becomes.
- an inlet valve 28 is provided, which is formed in the present embodiment as an active solenoid valve 30. This makes it possible to operate the fuel high ⁇ pressure pump 18 in partial funding, wherein
- Fuel 12 is not compressed by the pump piston 24 and forwarded to the pressure accumulator 20, but is fed back via a reflux.
- the fuel injection system 10 therefore has a total of a low pressure system 32 which provides the fuel 12, wherein the high-pressure fuel pump 18 includes a low pressure region 34 upstream of the pressure chamber 26, and a high pressure region 36 downstream of the pressure chamber 26.
- an outlet valve 38 Arranged on the high-pressure fuel pump 18 is an outlet valve 38, via which the fuel 12, which has been subjected to a predefined high pressure, is conveyed from the pressure chamber 26 to the pressure accumulator 20.
- a pressure limiting valve 40 which on ⁇ schüssigen fuel 12 for pressure reduction in the area downstream of the exhaust valve 38 in draining an area of the fuel injection system 10 upstream of the exhaust valve 38.
- the pressure relief valve 40 can, as indicated by dashed lines in Fig. 1, the over ⁇ schüssigen fuel 12 in an area upstream of the inlet valve 28 (path a)), in the low pressure region 34 of High-pressure fuel pump 18 (path b)), in the pressure chamber 26 (path c)), or directly into the tank 14 (path d)) drain.
- Fig. 2 shows a sectional view through a portion of the fuel injection system 10 in the region of high fuel ⁇ pressure pump 18.
- the force ⁇ high pressure fuel pump 18 a housing 43, in which the pressure chamber 26 is arranged.
- a supply line 44 is connected via an inlet connection 45, via which conveyed by the prefeed pump 16 in the low-pressure system 32
- Fuel 12 is supplied from an inlet region 46 of the fuel injection system 10 to the high-pressure fuel pump 18.
- a low-pressure damper 48 is further arranged, which has a damper cover 50 for defining a damper volume 52 and in the present embodiment, a damper capsule 54, which deform under the influence of pressure fluctuations and thus can absorb pressure pulsations.
- the damper volume 52 is connected to the
- Inlet region 46 is connected via a damper bore 56 in the housing 43. Fluidically, the damper bore 56, the inlet region 46 and the feed line 44 are also connected to the pressure chamber 26, wherein the inlet valve 28 is provided to enable or interrupt this fluidic connection.
- the check valve 42 al ⁇ ternatively either in the damper bore 56, in the Zulaufan- be arranged 45 or in the feed line 44. At each position, the check valve 42 prevents propagation of the pressure pulsations into the low pressure system 32 of the fuel injection system 10.
- the check valve 42 has a spring 58 which biases a valve member 60 against a valve seat 62 in a closing direction.
- the static opening pressure Pöff is advantageously set by the bias of the spring 58 in a range between 0.03 bar and 0.15 bar.
- the damper volume 52 is at least as great as the displacement volume 64 in the pressure chamber 26, which is a product of a piston cross-sectional area the pump piston 24 and a maximum piston stroke 66 in the pressure chamber 26 corresponds.
- the prefeed pump 16 In order to overcome the resistance of the spring 58, it is advantageous if the prefeed pump 16 generates an inlet pressure PZ in the fuel 12 which is greater than the static opening pressure Pöff of the check valve 42.
- Through- bore 72 forms, in which the check valve 42 is arranged to provide a parallel to the check valve 42 to ⁇ ordered bore 74 and notch 74. Therefore, the minimum leakage 68 and the hole / notch 74 a ge ⁇ ringrecigiger portion of the excess fuel 12 can be returned to the low-pressure system 32, 34 to relieve the low-pressure region of the high-pressure fuel pump 18th
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16/069,398 US20190003432A1 (en) | 2016-01-12 | 2016-12-19 | Fuel Injection System |
JP2018536258A JP2019506559A (en) | 2016-01-12 | 2016-12-19 | Fuel injection system |
CN201680078775.8A CN108431397A (en) | 2016-01-12 | 2016-12-19 | Fuel injection system |
KR1020187023234A KR20180100675A (en) | 2016-01-12 | 2016-12-19 | Fuel injection system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016200232.5 | 2016-01-12 | ||
DE102016200232.5A DE102016200232A1 (en) | 2016-01-12 | 2016-01-12 | Fuel injection system |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2017121578A1 true WO2017121578A1 (en) | 2017-07-20 |
Family
ID=57570562
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2016/081686 WO2017121578A1 (en) | 2016-01-12 | 2016-12-19 | Fuel injection system |
Country Status (6)
Country | Link |
---|---|
US (1) | US20190003432A1 (en) |
JP (1) | JP2019506559A (en) |
KR (1) | KR20180100675A (en) |
CN (1) | CN108431397A (en) |
DE (1) | DE102016200232A1 (en) |
WO (1) | WO2017121578A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019134990A1 (en) * | 2018-01-08 | 2019-07-11 | Cpt Group Gmbh | High-pressure fuel pump for a fuel injection system |
CN111448388A (en) * | 2018-07-23 | 2020-07-24 | 住友理工株式会社 | Connector with a locking member |
US11092124B2 (en) * | 2018-07-17 | 2021-08-17 | Sumitomo Riko Company Limited | Connector |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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EP1306548A2 (en) * | 2001-10-27 | 2003-05-02 | Robert Bosch Gmbh | Fuel injection apparatus in which the displacement control is improved |
DE10327408A1 (en) * | 2002-10-19 | 2004-04-29 | Robert Bosch Gmbh | Device for damping pressure pulsations in a fluid system, in particular in a fuel system of an internal combustion engine |
DE102011079673A1 (en) * | 2011-07-22 | 2013-01-24 | Robert Bosch Gmbh | High-pressure injection |
DE102011111579A1 (en) * | 2011-08-20 | 2013-02-21 | Volkswagen Aktiengesellschaft | Fluid conveyer system for conveying e.g. gas, to fuel system for internal combustion engine of motor car, has fluid connection made available exclusively over non-return valve for fluid between fluid reservoir and feed pump |
DE102011087957A1 (en) * | 2011-12-08 | 2013-06-13 | Robert Bosch Gmbh | Method for locating failure of conveyor system of combustion engine of motor car, involves closing failure in low-pressure range by determining low pressure degradation gradient in standstill of combustion engine |
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DE2933912A1 (en) * | 1979-08-22 | 1981-03-12 | Robert Bosch Gmbh, 7000 Stuttgart | NOISE REDUCTION DEVICE. |
US5623910A (en) * | 1994-11-30 | 1997-04-29 | Walbro Corporation | Check and vent valve assembly |
JP3471587B2 (en) * | 1997-10-27 | 2003-12-02 | 三菱電機株式会社 | High pressure fuel pump for in-cylinder injection |
DE19860672A1 (en) * | 1998-12-29 | 2000-07-13 | Bosch Gmbh Robert | Piston pump for high-pressure fuel generation |
JP2000303933A (en) * | 1999-04-20 | 2000-10-31 | Mitsubishi Electric Corp | High pressure fuel pump device |
DE10003748A1 (en) * | 2000-01-28 | 2001-08-30 | Bosch Gmbh Robert | Fuel supply system for internal combustion engine, with baffle pot is filled by device supplying fuel to fuel input line at least part of time |
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DE10351507A1 (en) * | 2003-11-05 | 2005-06-02 | Robert Bosch Gmbh | Process for operating a fuel system of an internal combustion engine, especially with direct fuel injection, comprises performing conveying strokes using a differential piston of pressure-generating device during start phase of the engine |
JP2007239610A (en) * | 2006-03-08 | 2007-09-20 | Nissan Motor Co Ltd | Device and method for setting target fuel pressure of engine |
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JP4530053B2 (en) * | 2008-01-22 | 2010-08-25 | 株式会社デンソー | Fuel pump |
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DE102012212062A1 (en) * | 2012-07-11 | 2014-01-16 | Robert Bosch Gmbh | Low pressure circuit for a fuel injection system, fuel injection system and method of operating a fuel injection system |
US9759174B2 (en) * | 2013-07-10 | 2017-09-12 | Stanadyne Llc | Constant pressure self-regulating common rail single piston pump |
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-
2016
- 2016-01-12 DE DE102016200232.5A patent/DE102016200232A1/en not_active Withdrawn
- 2016-12-19 JP JP2018536258A patent/JP2019506559A/en active Pending
- 2016-12-19 KR KR1020187023234A patent/KR20180100675A/en not_active Application Discontinuation
- 2016-12-19 US US16/069,398 patent/US20190003432A1/en not_active Abandoned
- 2016-12-19 CN CN201680078775.8A patent/CN108431397A/en active Pending
- 2016-12-19 WO PCT/EP2016/081686 patent/WO2017121578A1/en active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1306548A2 (en) * | 2001-10-27 | 2003-05-02 | Robert Bosch Gmbh | Fuel injection apparatus in which the displacement control is improved |
DE10327408A1 (en) * | 2002-10-19 | 2004-04-29 | Robert Bosch Gmbh | Device for damping pressure pulsations in a fluid system, in particular in a fuel system of an internal combustion engine |
DE102011079673A1 (en) * | 2011-07-22 | 2013-01-24 | Robert Bosch Gmbh | High-pressure injection |
DE102011111579A1 (en) * | 2011-08-20 | 2013-02-21 | Volkswagen Aktiengesellschaft | Fluid conveyer system for conveying e.g. gas, to fuel system for internal combustion engine of motor car, has fluid connection made available exclusively over non-return valve for fluid between fluid reservoir and feed pump |
DE102011087957A1 (en) * | 2011-12-08 | 2013-06-13 | Robert Bosch Gmbh | Method for locating failure of conveyor system of combustion engine of motor car, involves closing failure in low-pressure range by determining low pressure degradation gradient in standstill of combustion engine |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019134990A1 (en) * | 2018-01-08 | 2019-07-11 | Cpt Group Gmbh | High-pressure fuel pump for a fuel injection system |
US11092124B2 (en) * | 2018-07-17 | 2021-08-17 | Sumitomo Riko Company Limited | Connector |
CN111448388A (en) * | 2018-07-23 | 2020-07-24 | 住友理工株式会社 | Connector with a locking member |
US11092123B2 (en) * | 2018-07-23 | 2021-08-17 | Sumitomo Riko Company Limited | Connector |
CN111448388B (en) * | 2018-07-23 | 2022-04-05 | 住友理工株式会社 | Connector with a locking member |
Also Published As
Publication number | Publication date |
---|---|
JP2019506559A (en) | 2019-03-07 |
US20190003432A1 (en) | 2019-01-03 |
CN108431397A (en) | 2018-08-21 |
DE102016200232A1 (en) | 2017-07-13 |
KR20180100675A (en) | 2018-09-11 |
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